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UPD4701A

Part Number	UPD4701A
Manufacturer	NEC
Description	MOS INTEGRATED CIRCUIT
Published	Aug 5, 2011
Detailed Description	DATA SHEET MOS INTEGRATED CIRCUIT µPD4701A INCREMENTAL ENCODER COUNTER DESCRIPTION The µPD4701A is a counter for an X...
Datasheet	UPD4701A PDF File

Overview

DATA SHEET MOS INTEGRATED CIRCUIT µPD4701A INCREMENTAL ENCODER COUNTER DESCRIPTION The µPD4701A is a counter for an X, Y 2-axis incremental encoder.
When a two-phase encoder signal is input for the X and Y axes, direction discrimination and computation is performed, and count data is output in 8-bit parallel form.
In addition, a 3-contact-point input buffer is incorporated, which is useful for applications which use a pointing device such as a mouse or track-ball.
The CPU checks the switch input flag or count flag and reads the 12-bit count data in two operations, one for the lower byte and one for the upper byte.
The key input flag is output together with the count data in the upper byte...

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